pairing galaxy s6 active with 2013 sonata

I used to have galaxy 4 paired with my 2013 sonata. Worked great. Hyundai then upgraded their bluetooth software, and my pairing was hit and miss. I just got a galaxy s6 active and now when I try to pair it, I pick sonata on my list of nearby bluetooths and it says it's an incorrect password or pin. It does not allow me to get to the keypad to re-enter the passkey. Any suggestions? Thanks